CHEMICAL REACTION ENGINEERING QUIZ

Rate of a chemical reaction is not influenced by the

Catalyst

Number of molecules of reactants taking part in a reaction

Reactants concentration

Temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

In the gaseous phase ammonia formation reaction (N₂ + 3H₂ ⇋ 2NH₃), the value of the equilibrium constant depends on the

Volume of the reactor

Temperature

Total pressure of the system

Initial concentration of N₂ and H₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is used for calcination of limestone and dolomite in industrial practice?

Fixed bed reactor

None of these

Moving bed reactor

Fluidised bed reactor

TRUE ANSWER : ?
YOUR ANSWER : ?

The energy balance equation over a tubular reactor under transient conditions is

An algebric differential equation

A non-linear partial differential equation

A linear partial differential equation

An ordinary non-linear differential equation

TRUE ANSWER : ?
YOUR ANSWER : ?

Threshold energy in a reaction is equal to the

Normal energy of reactants

Activation energy

Neither A nor B

Sum of A & B

TRUE ANSWER : ?
YOUR ANSWER : ?

For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single

CSTR of volume V

PFR of volume V/X

CSTR of volume V/X

PFR of volume V

TRUE ANSWER : ?
YOUR ANSWER : ?

Knudsen diffusion is directly proportional to

1/√T

√T

T

T₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Sometimes, batch process is preferred over continuous process, when the product

Quality & yield can not be achieved in continuous processes, because of long residence time

Neither A nor B

Sales demand is fluctuating

Both A & B

TRUE ANSWER : ?
YOUR ANSWER : ?

For series reaction, the relative yield

Decreases with increasing conversion

Both A and C hold good

Is always greater for plug-flow reactor than for the single CSTR of the same volume

Statement in A is wrong

TRUE ANSWER : ?
YOUR ANSWER : ?

The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is

0.5

Data insufficient to calculate

0.875

0.425

TRUE ANSWER : ?
YOUR ANSWER : ?